can confirm TCl is good with cellulose. used them. roof is closed. never reaches above 31°

dreamKrusher,

this one i bought in long rolls dunno ... like 100m long and 1,50 wide or something like that. the double relective woven foil some builder-stores also sell. CSR sold me their factory grade (most durable and thickest one) i think i paid around 380 or so per roll. this foil is really tough not like the flimsy one you can buy in the builder store (there got for less than 200 bucks)

Calmman,

since less heat from the roof you can reduce aircon a lot. i now only use 28 degree setting and its nice and comfy. i even could reduce the number of aircon. just create an airflow with fans. we have a huge hall (450 sqft or something like this and i can cool the whole thing with just one 2HP inverter aircon at one end and two fans moving the air through the hall. aircon hardly has to work.

also our other rooms all run on 1HP even though aircon ppl say according to their formula must take more than one unit and /or larger units. no need... can easily cool down the whole house without any problem. also the house wont heat up quickly. i am quite content.

from my experience just cellulose wont be enough. better also create a second roof under the tiles with a reflective foil (also means protection from leaking). then make sure you get good closing windows. for us we could cut electricity consumption will all this + changing to inverter aircon when old one fails (no only two old ones left) to approx. 1/3 of the previous level. that is a lot of money you save every month - basically pays for all the costly insulation jobs.

the problem with rockwool is that it is not seamless. hard to reach corners also cannot cover properly. thus inconsitant. cellulose is blown into the place and creates a completely sealed insulation. it settles and there you are. i have not heard that cellulose is having problem in the long run. the insulation properties are superior as to my research. now in europe the insulation is changing all to cellulose due to it providing better features than rockwool.

i hope the info helps.

What is the typical cost of doing this Insulator for a standard Double Storey Terrace... say around 1500 Sqft.

Any idea?

www.shchoy.com

Super_Lutein,

ceiling never exceeds 30°. the house got good windows and thick walls (old UK-standard building). inside i cool the house to 28° with aircon. doesnt set me back by much. but it also means i can not really say how big the factor of the roof insulation is as standalone measure. did all at the same time. but since it 30° you can be sure your house will be a lot cooler than before (my neighbours ceiling is whopping 38° at the time we compare to my 30°).

i used TCl. i recommend them. the product is the good celllulose not the cheap version from china.  no need to save there.

i read it just now. i really wonder what they measured. i have before and after readings (TCL cellulose) and my results match the ones of you guys. using them is free cause you save so much on a/c charges you break even after a short while and then you have the savings in your pocket personally i would assume that insulating the ceiling alone will shave off approx. 20-30% of the bill based on my previous experience ina single story link house.